# Fundamental RLC vs Electronic Component Codes Pro

The clearest difference is update cadence: Electronic Component Codes Pro at every 7 months against Fundamental RLC's every 38 months. Electronic Component Codes Pro also leads on iOS requirement (16.0 vs 18.0). Fundamental RLC's advantage is price ($0.99 vs $3.99) and chart position (#197 vs unranked). On ads, in-app purchases, monetization model and device support there is nothing between them.

Fundamental RLC costs $0.99 and Electronic Component Codes Pro $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Fundamental RLC ships an update every 38 months, Electronic Component Codes Pro every 7 months. The most recent releases landed on September 15, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Fundamental RLC | Electronic Component Codes Pro |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fundamental-rlc/id1629246247/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 7 months** |
| Monetization | Paid | Paid |
| Best chart rank | **#197** | — |
| Size | 15 MB | 7 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sigma Sky, LLC](https://appshunter.io/developer/320947305) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Fundamental RLC

[App page](https://appshunter.io/ios/app/fundamental-rlc/id1629246247)

**Currently charting:** #197 Top Paid · Reference (US App Store)

This app serves as a pocket reference for electrical engineering, covering fundamental RLC circuit topics. It includes calculations for impedance, Ohm's law, and resistor color codes, along with circuit solvers. It is accessible offline and contains no ads or in-app purchases.

**Highlights:** RLC circuit calculations, Impedance and phase angle, Ohm's law solver, Resistor color code chart, Delta/Wye solver, Offline accessibility

**Features:** macOS Compatibility

**In-app purchases:** none


### Electronic Component Codes Pro

[App page](https://appshunter.io/ios/app/electronic-component-codes-pro/id6444056543)

This application helps identify electronic component values using their markings. It supports various codes for resistors, capacitors, and inductors, offering detailed explanations and standard value charts.

**Highlights:** Resistor color code calculator, SMD resistor code identification, Capacitor code lookup, Inductor code calculator, EIA-96 code support, Detailed help sections, Standard E-series value charts

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Fundamental RLC free?

Fundamental RLC costs $0.99, with no in-app purchases.

### Is Electronic Component Codes Pro free?

Electronic Component Codes Pro costs $3.99, with no in-app purchases.

### Do Fundamental RLC or Electronic Component Codes Pro have ads?

Neither Fundamental RLC nor Electronic Component Codes Pro shows ads.

### Which is updated more often, Fundamental RLC or Electronic Component Codes Pro?

Fundamental RLC ships an update every 38 months, and Electronic Component Codes Pro every 7 months. Most recently, Fundamental RLC was updated on September 15, 2026 and Electronic Component Codes Pro on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*